Computer keyboard



FIG. 1 is a front right isometric view of a computer keyboard incorporating the new design;

FIG. 2 is a left side elevation the computer keyboard of FIG. 1;

FIG. 3 is a rear elevation of the computer keyboard of FIG. 1; and,

FIG. 4 is a bottom plan of the computer keyboard of FIG. 1. 

The ornamental design for a computer keyboard, as shown and described. 